Subtract 3/90 from 16/18
16/18 - 3/90 is 77/90.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 18 and 90 is 90
Next, find the equivalent fraction of both fractional numbers with denominator 90 - For the 1st fraction, since 18 × 5 = 90,
16/18 = 16 × 5/18 × 5 = 80/90 - Likewise, for the 2nd fraction, since 90 × 1 = 90,
3/90 = 3 × 1/90 × 1 = 3/90 - Subtract the two like fractions:
80/90 - 3/90 = 80 - 3/90 = 77/90
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 32/18-3/90 16/18-6/90 16/36-3/90 48/18-3/90 16/18-9/90 16/54-3/90 80/18-3/90 16/18-15/90 16/90-3/90 16/18-21/90